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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Contains and regulates the temp of the testes for sperm production
testosterone
mastitis
Where livelihood is in agriculture
scrotum
2. Days which have increasing daylight hours
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3. Can survive ~7 days in cow. vast majority <48 hours
colostrum
humans: stress level vs sperm
epididymis: definition - 3 parts - 4 functions
Sperm survival specs
4. Days which have increasing daylight hours
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5. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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6. Microscopic - make sure not sterile - very few bulls are actually tested
semen evaluation (BSE)
purpose of Breeding Soundness Exam (BSE) for males
Bull's fibro-elastic penis
Where livelihood is in agriculture
7. Look for infection - split - and rupture of the penis
effects of estrogen
testis (gonads)
penis and prepuce observation (BSE)
butterfat
8. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
cow ovulation
rectal palpation (BSE)
what has to happen for males for copulation to occur
penis and prepuce observation (BSE)
9. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
semen evaluation (BSE)
polyestrous
Reasons for gestation length being affected
epididymis: definition - 3 parts - 4 functions
10. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
elastrator
sperm cell
seminiferous tubules
what has to happen for males for copulation to occur
11. 14-19 (17) days
vulva
ewe estrus cycle
reason for seasonal breeding periods
spermatogenesis
12. When are dairy cattle dehorned?
behavioral signs of estrus
leydid or interstitial cells
estrous
~1 month
13. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
feeding a high producing dairy cow
sigmoid flexure
urethra
seasonally polyestrous
14. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
Sperm growth rate
things to check for in a breeding soundness exam (BSE)
Jersey Cow
eminal vesicles
15. Sperm production
spermatogenesis
van deferens
estrus
scrotal circumference (BSE)
16. Provide nourishment for the developing sperm
sertoli cells
cervix
Sperm survival specs
Hormones from both the fetus and the mom.
17. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
prostate gland
seasonally polyestrous
1. more cost effective - 2. powdered milk is in excess production
Lutinizing Hormone in females
18. Allows extension of penis without fibro-elastic penis
sigmoid flexure
humans: stress level vs sperm
Dairy Cattle Gestation
butterfat
19. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
urethra
mare's estrous cycle
growth lost from castration methods (knife & band)
20. To remove/separate testicles from animal's body before animal reaches puberty
epididymis: definition - 3 parts - 4 functions
mare ovulation
castration
semen evaluation (BSE)
21. Scar tissue plugs up chambers of udder
mastitis
Lutinizing Hormone in males
sow ovulation
mare gestation
22. Way to know everything is alright with the breeding male
rectal palpation (BSE)
mare gestation
purpose of Breeding Soundness Exam (BSE) for males
Follical Stimulating in males
23. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
rectal palpation (BSE)
eminal vesicles
sertoli cells
age and castration
24. (FSH) causes egg to mature in females
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Follical Stimulating in females
cowper's gland
Mares
25. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
mare estrus
pelvis
ewe estrus cycle
normal presentation of the fetus
26. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
penis proper
rectal palpation (BSE)
growth lost from castration methods (knife & band)
monorchid
27. 114 days
visual evaluation (BSE)
stag
sow gestation
colostrum
28. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
Dairy Cattle milking schedule
Parturition
colostrum
urethra
29. 1. brain function - 2. blood flow - 3. willing female
prostaglandin
what has to happen for males for copulation to occur
epididymis: definition - 3 parts - 4 functions
stag
30. Why Dairy calves are fed powdered milk.
cow estrus
hypothalamus and pituitary gland
1. more cost effective - 2. powdered milk is in excess production
Lutinizing Hormone in males
31. Urinary calculi.
burdizzo
Brown Swiss Cow
penis and prepuce observation (BSE)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
32. (FSH) causes egg to mature in females
mare's estrous cycle
humans: stress level vs sperm
Follical Stimulating in females
prostate gland
33. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
eminal vesicles
Follical Stimulating in females
Jersey Cow
functions of progestrone
34. 1-3 days
retractor muscles
femininity of a heifer
age and castration
sow estrus
35. Why does estrus happen before ovulation?
sperm cell
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
burdizzo
normal presentation of the fetus
36. Duct through penis that carries sperm and urine
dairy cattle pregnancy check
monorchid
elastrator
urethra
37. 16-20 hours
sertoli cells
mastitis
humans: stress level vs sperm
cow estrus
38. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
Dairy Cattle Lactation (standard)
epididymis: definition - 3 parts - 4 functions
burdizzo
van deferens
39. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
spermatogenesis
organs used in spermatogenesis
testis (gonads)
hypothalamus and pituitary gland
40. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
vulva
epididymis: definition - 3 parts - 4 functions
sperm cell
sigmoid flexure
41. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
oviducts
scrotal circumference (BSE)
growth lost from castration methods (knife & band)
monestrous
42. ~305 days (altough often longer due to breeding difficulties)
uterus
Dairy Cattle Lactation (standard)
sow ovulation
Lutinizing Hormone in males
43. What helps regulate spermatogenesis?
Reasons for gestation length being affected
Dairy Cattle Lactation (standard)
testosterone
scrotal circumference (BSE)
44. 336 days
reasons for castration
#1 cost in production
seminiferous tubules
mare gestation
45. Produce testosterone. located between the seminiferous tubules
ewe estrus cycle
testis (gonads)
leydid or interstitial cells
Grading choice
46. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
ewe estrus cycle
sertoli cells
sigmoid flexure
Reasons for gestation length being affected
47. 45-60 days after breeding; re-breed as required
burdizzo
Bull's fibro-elastic penis
dartos muscle
dairy cattle pregnancy check
48. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
sigmoid flexure
organs used in spermatogenesis
Mares
cow ovulation
49. (LH) stimulates the Leydig cells to produce testosterone
Lutinizing Hormone in males
vulva
visual evaluation (BSE)
sertoli cells
50. 283 days
accessory sex glands
cremaster muscle
sow gestation
cow gestation